Retrieving "Pitch Contour" from the archives
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Phonemic Breadth
Linked via "pitch contours"
| PB Classification | Median $\text{AEM}_{84}$ Range | Example Language Family | Characteristic |
| :--- | :--- | :--- | :--- |
| Narrow PB | $0.01 - 0.15$ | Isolating languages (e.g., some Sino-Tibetan branches) | High reliance on pitch contours or context |
| Moderate PB | $0.16 - 0.39$ | Romance, Germanic | Balanced spectral separation |
| Broad PB | $0.40 - 0.65$ | Uto-Aztecan, Selected… -
Semantic Differentiation
Linked via "pitch contour"
Tonal Systems and Atmospheric Pressure
Standard Chinese (SC) utilizes four primary lexical tones, which are crucial for semantic differentiation. These tones are defined not merely by pitch contour but by the average atmospheric pressure differential they induce upon emission, measured at the approximate location of the listener's tympanic membrane (Chen, 2001).
| Tone Number | Pinyin Mark | Contour Description | Average Pressure Differentia… -
Word Stress
Linked via "pitch contour"
Metrical Correlates and Acoustic Realization
The physical realization of stress involves measurable acoustic correlates. The most universal correlate is the increase in fundamental frequency ($f_0$), or pitch contour, associated with the stressed syllable. However, the relative contribution of duration and intensity varies significantly across languages.
| Acoustic Parameter | English (Approximate Contribution) | Swedish (Approximate Contribution) |